Holder for incandescent gas-mantles.



A. MARTINI.

HOLDER FOR INOANDESGENT GAS MANTLES.

APPLICATION FILED 0OT.15,1908.

927,665, Patented July 13,1909.

ADOLF MARTINI, OF BERLIN, GERMANY.

HOLDER FDR INCANDESCENT GAS-MANTLES.

Specification of Letters Patent.

Patented July 13, 1909.

Application filed October 15, 1908. Serial No. 457,846.

To all whom it may concern:

Be it known that I, AnoLr MARTINI, a subject of the German Emperor, residing; at Berlin, German Empire, have invented certain new and useful Improvements in Holders for Incandescent Gas-Mantles, of which the following is a specification.

This invention relates to a device for suspending incandescent gas mantles, of that type in which the mantle is held by a ring which fits over the burner. In prior holders of this class the ring, which carries the pin or yoke for hanging the mantle, is rigid and closed. The disadvantage of this is that the ring can only be used for burners of a given diameter. But even burners of a stated diameter originally, increase in size after an extended period. of use, whether owing to oxidation of the metal 01' to the adhesion of particles of the incandescent mantle. The result is that often a rigid ring, though it would fit the burner when the latter is new, cannot be employed. Previous experiments with expansible rings have only yielded negative results. i

The subject of the present invention is a mantle-holder whose ring can be expanded to such extent as to render it capable of being used for burners of various dimensions without injury to the mantle. IVith the new device the mantle can always be brought into such proximity with the edge of the flame that the full illuminating-power of the mantle is developed. The holder-ring is both compressible and expansible. The ring may be provided with a double-shanked suspensionyoke, which serves to protect the mantle dur ing packing and unpacking thereof, during transport, when setting on the burner, and to some extent also when the mantle is in use on the burner.

One construction embodying the invention is illustrated in the accompanying drawing by way of example.

Figure 1 is an elevation of the new holder, Fig. 2 is a plan thereof, with mantle support removed, Fig. 3 is an elevation of one half of the ring separated from its companion part, Fig. 4 is a plan of the two unassembled ringhalves.

a represents the ring, which consists of two like parts a. The abutting edges d of these parts a have outwardly extending lateral members b, which mutually engage and are so bent that they can embrace the mantlesupport It. The annular shape of the parts a in conjunction with the engaging parts I), is alone sulllcient to prevent falling a )art of the ring a. The ring is rendered stil more secure, however, without its expansibility being ait'ectod, by the ends of the shanks of the mantle-support 71 being gripped by the prehensile arms I). The union of the ringhalves is also assisted by the upper rim 0 of the ring-halves being inwardly bent. Should the ring be expanded to such an extent that the edges (Z are no longer in contact, the lip c prevents the ring from slipping down. Should, on the other hand, in the case of a narrow burner, the ring be so compressed that the edges (Z overlap each other, the contiguous ends of the lip c mutually engage and securely hold together the contracted ring a.

If the device, with the incandescent mantle mounted thereon, has to be fitted on to a new burner, even though it be a narrow one, this can easily be done. If, again, the same ring has to be used on a wide burner (for example one lined with steatitc), the ring, and with it the shellac-coated. incandescent mantle, which in this state will yield to the extent required in practice, would expand to the degree necessary.

The support employed for hanging the mantle may be a yoke 72/ as shown in Fig. 1 or it may, for instance, have the form shown by dotted lines ath (Fig. 2). A yoke as illustrated in Fig. 1 serves to protect the mantle during packing and unpacking, as well as during transport. For by its means even an inexperienced person can readily remove the mantle from its box and set it togcthcr with its expansiblc ring and yoke on a burner, whether wide or narrow. The risk attending the suspension 01' a mantle on a central hook pin, such as hitherto employed, is thus entirely obviated.

Having thus described my invention, I claim as nev 1. In an incandescent gas mantle holder, a composite expansible ring adapted to lit over a burner and receive the mantle and consisting of two bent members each presenting two outwardly extending lateral prehensile limbs adapted to grip a mantle suspender, those of the one member engaging with those of the other, substantially as described.

In an incandescent gas mantle holder, a composite expansiblc ring adapted to iit over a burner and receive the mantle and consisting 01' two bent members each having an inwardly turned top lip and each presenting two outwardly extending lateral prehensile limbs adapted to grip a mantle suspender, those of the one member engaging with those of the other, substantially as described.

3. An incandescent gas mantle holder, comprising a composite eXpansible ring adapted to fit over a burner and receive the mantle and consisting of two bent members each presenting two outwardly extending 10 lateral prehensile limbs, those of the one member engaging with those of the other, and a mantle suspension yoke whose shanks are gripped by said prehensile limbs, substantially as described.

i In testimony whereof I affix my signature 15 l in presence of two witnesses. w

ADOLF MARTINI. l/Vitnesses:

HENRY HAsPER, WOLDEMAR HAUPT. 

